Study of yttrium 4-nitrocinnamate to promote surface interactions with AS1020 steel

A Study on the Localized Corrosion Inhibition for Mild Steel in Saline Solution

“…5(d-f) also indicated that an increase of NaCl concentration in 0.45 mM Y(4NO 2 Cin) 3 solution increased the rough level of the steel surface due to a more aggressive environment, resulting in lower inhibition efficiency obtained from electrochemical results. 3 [17,20]. Figure 6(b) indicates ATR-FTIR spectra of the steel surfaces after 10-hour immersion in 0.45 mM Y(4NO 2 Cin) 3 solutions containing 0.01, 0.10, and 0.60 M NaCl, respectively.…”

“…The details of the synthesis and characterization of Y(4NO 2 Cin) 3 compound as an investigated corrosion inhibitor in this study can be found in the previous publication [17,20]. 0.45 mM Y(4-NO 2 Cin) 3 was added to 0.01, 0.10, and 0.60 M NaCl solutions in distilled water using reagent grade sodium chloride purchased from Sigma Aldrich with 12 hours of stirring.…”

“…The mapping galvanic currents between a chosen wire and all the other wires sorted together using a pre-programmed Auto switch device and an ACM Auto ZRA indicated the corrosion processes. The galvanic current data were performed and characterized using procedures like that described in a previous publication [17]. To investigate the relationship between the electrochemical properties and surface morphology, the specimens were examined by scanning electron microscopy (SEM) and attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR, Alpha-FTIR spectrometer) after immersion for 10 h in solutions at room temperature.…”

“…Understanding and managing localized corrosion will be critical to improve the lifetime of steel in the aggressive environments. Therefore, this work further extends the study of the corrosion and localized corrosion inhibition mechanism by which the Y(4NO 2 Cin) 3 compound mitigates steel corrosion and localized corrosion [17]. A combination of aggressive environments dependent potentiodynamic polarization (PD), electrochemical impedance spectroscopy (EIS), and wire beam electrode (WBE) has been utilized to correlate the inhibition performance response with the surface characterizations.…”

“…We have recently developed the new yttrium 4-nitrocinnamate -Y(4NO 2 Cin) 3 -to replace chromate, molybdate, imidazoline and its derivative technologies [17][18][19]. While corrosion inhibition itself is not new, there has been little study on inhibitor properties using new electrochemical techniques such as the wire beam electrode to measure and evaluate the information regarding localized corrosion inhibition.…”